LSAT - Law School Admission Necessary and Sufficient Assumptions Questions and Answers

Question 1

Nutritionist: Any beverage that contains a high amount of refined sugar is unhealthy.
Since many popular fruit juices are high in naturally occurring sugars and not refined sugar, they are, contrary to popular belief, actually healthy.

Accepted Answer

Beverages that are high in naturally occurring sugars are not unhealthy.

Answer

Some beverages that are high in naturally occurring sugars are also high in refined sugar.

Answer

The most popular fruit juices are the ones with the most naturally occurring sugar.

Answer

Refined sugar is more harmful to the body than naturally occurring sugar.

Question 2

Political Analyst: A candidate who does not win the support of young voters will not be elected president. Since candidate Miller has focused her campaign on issues that are of primary concern to young voters, she is likely to be elected president.

Accepted Answer

Focusing a campaign on issues of primary concern to young voters is sufficient to win their support.

Answer

No other candidate has focused on issues of primary concern to young voters.

Answer

Issues of primary concern to young voters are the most important issues in the presidential election.

Answer

Candidate Miller will win the support of young voters.

Question 3

Historian: To be considered a truly great military leader, one must have demonstrated strategic brilliance on the battlefield. Alexander the Great is widely considered a truly great military leader.

Accepted Answer

Alexander the Great demonstrated strategic brilliance on the battlefield.

Answer

All leaders considered truly great have demonstrated strategic brilliance.

Answer

Only military leaders can be considered truly great.

Answer

Strategic brilliance is the only quality required to be a great military leader.

Question 4

An assumption that, if true, is by itself enough to guarantee the truth of the argument's conclusion is known as what?

Accepted Answer

A sufficient assumption

Answer

A counter-premise

Answer

A necessary assumption

Answer

An auxiliary conclusion

Question 5

Ecologist: The population of monarch butterflies has declined sharply in recent years. This decline is due to the widespread use of herbicides that destroy milkweed, which is the sole food source for monarch caterpillars. Therefore, to increase the monarch butterfly population, we must restrict the use of these herbicides.

Accepted Answer

Restricting the use of the herbicides will lead to an increase in the amount of available milkweed.

Answer

The use of herbicides is the only factor negatively affecting the monarch butterfly population.

Answer

Monarch butterflies are an important part of the ecosystem.

Answer

Farmers will comply with any new restrictions on herbicide use.

Question 6

Art Critic: Any painting created by a master of the Renaissance period is a masterpiece. The painting 'Sunrise over the Harbor' is not a masterpiece.

Accepted Answer

'Sunrise over the Harbor' was painted by an artist who was not a master of the Renaissance period.

Answer

Some paintings that are not masterpieces were created by masters of the Renaissance period.

Answer

No master of the Renaissance period created the painting 'Sunrise over the Harbor'.

Answer

Only paintings created by masters of the Renaissance period can be masterpieces.

Nutritionist: Any beverage that contains a high amount of refined sugar is unhealthy.Since many popular fruit juices are high in naturally occurring sugars and not refined sugar, they are, contrary to popular belief, actually healthy.

Nutritionist: Any beverage that contains a high amount of refined sugar is unhealthy.
Since many popular fruit juices are high in naturally occurring sugars and not refined sugar, they are, contrary to popular belief, actually healthy.